Churchill guard Nathan Woods gets in for an easy layup as Warren beats the Chargers 77-76 in playoff action at the Alamo Convocation Center on Friday, Feb. 24, 2012.

Photo By TOM REEL/San Antonio Express-News

Churchill center Connor Lammert goes up in a crowd for a shot as Warren beats the Chargers 77-76 in playoff action at the Alamo Convocation Center on Friday, Feb. 24, 2012.

Photo By TOM REEL/San Antonio Express-News

Teammates congratulate the Warriors' Marcus Keene on the bench after he hit the game-winning shot as Warren beats Churchill 77-76 in playoff action at the Alamo Convocation Center on Friday, Feb. 24, 2012.

“I've never had a player like that,” Weaver said. “He's so focused in at times like that. He wants the ball, and he knows he can do anything.”

Warren (32-5) will face Judson (28-8) in the third round. The Rockets defeated O'Connor 46-32 in the first half of a doubleheader at ACC on Friday. Their third-round game is set for Monday at UTSA.

Keene, who missed six weeks this season because of a high ankle sprain, said he's still playing at about 80 percent.

With Warren's leading scorer, Taurean Waller-Prince, on the bench after fouling out, it was up to Keene to take over. He scored all 11 of the Warriors' fourth-quarter points and finished with 22. Both teams had their scoring runs as Keene battled with Mammel, who also finished with 22.

Churchill (33-3) took an early advantage behind the shooting of Taylor Sutlive, who hit four first-half 3-pointers and finished with 19 as the Chargers led 42-39 at halftime.

Waller-Prince, who scored 17, was called for his fourth foul less than two minutes into the second half. With Waller-Prince playing tentatively to avoid fouling out — he finally picked up his fifth foul with two minutes left — Churchill applied pressure inside to go on a 12-0 run, shutting out the Warriors for a five-minute stretch. Connor Lammert scored eight of his 17 in the run, including a dunk that put Churchill ahead 73-70 with two minutes left.